JPS59122767U

JPS59122767U - Cooling device for rotating electrical machines

Info

Publication number: JPS59122767U
Application number: JP1443583U
Authority: JP
Inventors: 敏雄小俣
Original assignee: 株式会社安川電機
Priority date: 1983-02-04
Filing date: 1983-02-04
Publication date: 1984-08-18

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来例を示す側面図で上半部を断面で示してい
る。第２図は従来例における通風ダクト内への冷却風の
流入状態を示す説明図、第３図は本案の一実施例を示す
側面図で上半部を断面で示している。第４図は本案の一
実施例における第２図相当図である。１・・・フレーム、２・・・ダクト壁、３・・・通風ダ
クト、３ａ・・・通風ダクトの入口面、４・・・ステー
タコア、５ａ、　　５ｂ・・・ステータコイルのコイル
エンド、６゜７・・・ブラケット、８．９・・・通風孔
、１０・・・導風板、１１・・・回転軸、１２．１３・
・・軸受、１４・・・ロータコア、１５．１６・・・冷
却ファン。第３図第４図 ’　ｌ、−ｏ）Ｘ’２３FIG. 1 is a side view of a conventional example, showing the upper half in cross section. FIG. 2 is an explanatory diagram showing the state of cooling air flowing into the ventilation duct in a conventional example, and FIG. 3 is a side view showing an embodiment of the present invention, showing the upper half in cross section. FIG. 4 is a diagram corresponding to FIG. 2 in one embodiment of the present invention. DESCRIPTION OF SYMBOLS 1... Frame, 2... Duct wall, 3... Ventilation duct, 3a... Inlet surface of ventilation duct, 4... Stator core, 5a, 5b... Coil end of stator coil, 6° 7... Bracket, 8.9... Ventilation hole, 10... Wind guide plate, 11... Rotating shaft, 12.13.
...Bearing, 14...Rotor core, 15.16...Cooling fan. Figure 3 Figure 4'l, -o)X'23

Claims

[Claims for Utility Model Registration] 1 A duct wall is formed by providing a plurality of core receiving ribs in the axial direction on the inside of the frame, and a ventilation duct is formed between these duct walls, so that it can be used in one direction rotation. In a cooling device for a rotating electrical machine that circulates cooling air into the ventilation duct by the rotation of a centrifugal cooling fan with a high rate of rotation, the length of each duct wall inside the frame on the cooling air inlet side is set in the direction of rotation of the cooling fan. A cooling device for a rotating electric machine, characterized in that the inclination angle of the inlet surface of the ventilation duct with respect to the circumferential flow of the cooling air is made thicker.2 The cooling air inlet side of the core receiving rib is A cooling device for a rotating electrical machine according to claim 1, which is a utility model registered claim, wherein the cooling fan is gradually elongated in the direction of rotation of the cooling fan. A cooling device for a rotating electric machine according to claim 1, which is provided with an auxiliary duct wall whose length is gradually increased toward the end.